Wow, thanks for all your help already.

I can't post the code because there is no code. I could long ago have written something, but the "just writing something" approach is what I want to get away from.

Thanks particularly to pfaut, that's exactly the kind of thing I wanted.
--

($_='jjjuuusssttt annootthheer
     pppeeerrrlll haaaccckkeer')=~y/a-z//s;print;
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